land
Land refers to the part of the earth's surface that is not flooded by liquid water. Land and sea, ocean or other water bodies are the most basic differences in the surface. Most of the activities in human history occur on land, especially those that can provide agriculture, hunting, and other human activities, often in areas where people are gathered early. Terrestrial growth of terrestrial and terrestrial animals, its type and aquatic plants and animals also have some differences. Land and water boundaries also vary with the region, some areas of the terrain to rock-based, and the water will have a clear demarcation. But there are wetlands or swamps between land and water in some areas, and there is no clear boundary between land and water. The land and sea boundary is generally known as a coastal zone or a beach. ...